#!/usr/bin/python
#coding=utf-8

def _init():
    global _global_dict
    _global_dict = {}

def set_value(key,value):
    #定义一个全局变量
    _global_dict[key] = value

def get_value(key,defValue=None):
    #获得一个全局变量,不存在则返回默认值
    try:
        return _global_dict[key]
    except KeyError:
        return defValue
